The Principle of Least knowledge also called the law of Demeter, as explained in Eric Feminella’s blog “Principle of Least Knowledge”, is a design principle that provides guidelines for designing a system with minimal dependencies.  It is summarized in short as “Only talk to your immediate friends.”

A client should have knowledge of an object’s member, and not have access to properties and methods of other objects via the members.

The example shown in the blog has three classes: ClassA, ClassB, and ClassC. ClassA has an instance member of type ClassB and ClassB has an instance member of type ClassC. This shows that all the classes are connected one by one, and this can be extended further ClassC if need be. Now believe it or not this example violates The Principle of Least Knowledge because it creates multiple dependencies, thus reducing the maintainability because if ClassA needs some work so would all the instances of ClassA. This creates like a domino effect and keeping up with the client could pose some trouble.

Now, like the blog explains, in software development there might be some trade-offs. If the program runs better optimally with the above method, then maintenance might need to be pushed aside for just that. But it’s an important goal for the software developer to minimize dependencies, and by following guidelines provided by The Principle of Least Knowledge this becomes much easier to accomplish.

The Principle of Least knowledge is very important when it comes to coding because when it comes to programming a client itself, it becomes very easy to callback other dependencies to make things easier. But this creates more classes that, in a before blog would be referred to as “master classes” and more redundant code is created, and other dependencies are brought into the mix.

In code it seems like it’s better off if some classes don’t know the inner working of their other class, I’ve seen many programs break entirely because of one class. These classes are dependent of other classes. When one class falls all the other classes fall with it. So, It’s important to implement these dependencies so that they can be changed easily. And it’s also remembered to implement in such a way that they don’t require these chains of dependencies involved. All in all, it’s best to create a program that easy to modify and refactor so that the code is easy to work with in future development.

Link to Blog: http://www.ericfeminella.com/blog/2008/02/02/principle-of-least-knowledge/

From the blog CS@Worcester – FindKelvin by Kelvin Nina and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.

Refactoring is an important concept in software development
that refers to the process of modifying and improving the internal structure of
existing code without changing its external behavior. This can be a useful
technique for improving the readability, maintainability, and performance of a
codebase, and it is often an essential part of the software development
process.

There are many reasons why a developer might choose to
refactor their code. One common reason is to improve the readability and
understandability of the code. Over time, as a codebase grows and evolves, it
can become difficult to understand and maintain. Refactoring can help to clean
up the code and make it more organized and easier to read. Another reason to
refactor code is to improve its maintainability. As a codebase grows and
changes, it can become more difficult to make updates and modifications without
introducing bugs or breaking existing functionality. Refactoring can help to
make the code more modular and flexible, which can make it easier to make
changes and updates without breaking the code. Refactoring can also be used to
improve the performance of a codebase. As code is written and optimized, it can
sometimes become inefficient or slow. Refactoring can help to identify and
remove bottlenecks, and to optimize the code for better performance.

I chose this blog post on refactoring because it is a
crucial concept in the field of computer science. As I read through the post, I
found it to be very informative and well-written. The post clearly explained
what refactoring is and described the various benefits it offers, such as
improving readability, maintainability, and performance. I found the discussion
of different techniques for refactoring code particularly interesting.
Techniques like extracting methods or functions, renaming variables and
functions, and restructuring code can all be effective ways to make code more
modular, readable, and maintainable. I also appreciated the emphasis on maintaining
the external behavior of the code during refactoring. This is something I will
keep in mind as I continue to learn software development. Although refactoring
wasn’t required in this class, I plan to use what I learned on future projects
and when working with others on a team. I will refer to this resource as I
continue to improve my skills and knowledge in the field.

Source:

https://maddevs.io/blog/code-refactoring/

From the blog Zed's Blog by Lord Zed and used with permission of the author. All other rights reserved by the author.